1) Download a picture program like IRfanview ( free )
2) Open picture
3) Resize if it's very big to a normal size for internet
4) Save as.. ( JPEG compression should be between 60-80 )
5) Upload and have fun :)

hola....my friend just told me a simple trick.
1. Use windows paint
2. open file, and get the photo file you want
3. choose "image" --> stretch the photo into smaller size
4. save it as jpg, gif
Hope it can help some other newbie like me :D